Math Crossword - Fill In the Missing Numbers

Every row and every column of a frame is a sum, read left to right and top to bottom. Fill in the empty squares so that all the sums come out.

• Start with a sum that is missing only one number - there is always one. Filling it in usually leaves another sum with a single gap.
• Each corner belongs to two sums, one across and one down, so try a corner you have just found in the other direction as well.
• The number in the heavy box belongs to a sum that crosses the joining square into the next frame.
• A dot means multiply, a colon means divide. All numbers are whole, 1 to 99, and every division is exact.
• A square with a cross through it is not part of any sum.

Nothing is marked while you type - press Show the wrong squares to check. Finish the sheet and you score a point for every square. Reload for a new puzzle.

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